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  1. Catalogue of North American plants north of Mexico exclusive of the lower cryptogams / by A.A. Heller.
    By: Heller, A. A.
    Edition: 2nd ed.
    Publication info: [S.l. :s.n.],1900.
    Contributed by: Canadiana.org (archive.org)
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  2. Catalogue of North American plants north of Mexico, exclusive of the lower cryptogams by A.A. Heller.
    By: Heller, A. A.
    Edition: 2nd ed.
    Publication info: [S.l. :s.n.],1900.
    Contributed by: Canadiana.org (archive.org)
    View Book
  3. Catalogue of North American plants of Mexico, exclusive of the lower cryptogams by A.A. Heller.
    By: Heller, A. A.
    Publication info: [S.l. :s.n.],1898.
    Contributed by: Canadiana.org (archive.org)
    View Book